S-3.3, r. 2 - Regulation respecting rail safety

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87. When switching near a level crossing, an engineer may not allow any equipment to stand on whole or part of the level crossing for a period longer than 5 minutes when vehicular or pedestrian traffic requires passage.
When emergency vehicles with flashing lights or revolving beacons in operation require passage, he must take all measures to clear the level crossing.
O.C. 1401-2000, s. 87.